On an IP Office V2 7.0 we are using an analog station port to page with a UPAM. Paging is working but when the person making the page hangs up the IPO continues to send a low volume high pitched tone for about 5 seconds that is heard over the paging sytem. The paging company has tried 4 different page modules from Viking, Bogen, Valcom etc. Anybody out there here of this problem?